All versions of the iOS for the iPhone include Apple’s default clock app that features alarm settings, a timer, a world clock, and a stop watch. The clock app works well, but there are several pages of other free and inexpensive timer apps in the iTunes Store for both the iPhone and the iPad, the latter of which does not include a timer by default.

These timer and clock apps range from the very simple timer displays to more unique functions, such as interval timers, a few apps for timing meetings and presentations, and even a couple for clocking labor contractions.

I went through the pickings and selected ten representative apps, but you will find many more that might fit your needs. If you have a favorite timer app, please let us know about it in the comment section.

The ad-based version of Interval Timer is a nifty fitness and workout app in which you can keep track of your work and rest periods during workouts.

The customizable sets for high/low intensity intervals is easy to configure, and it comes with a variety of alarm sounds (Bell, Boing, HipHop, Tiger, etc.) The app integrates with the iTunes library in your iPhone so you can listen to music when the timer is running. The ads are not too obtrusive, but if you rather not see them, you can get the Pro version for .99 cents.

You may only use this labor contraction timer app a few times in life, but according to user comments in iTunes, it really is handy.

The user interface is simple, and it includes a feature for emailing a log history of contractions. Specifying the intensity of each contraction, and adding notes to or deleting a specific contraction entry are features included in the most recent version.

The design of this multiple timer with alarms is not as attractive as it could be, but I keep Nag in my iPhone’s main utility folder because it a simple way to set a specified time without having to perform several taps to do so.

Timer with Sections ($1.99) is another handy app I sometimes use in meetings and workshops I conduct. It allows you set up various times for parts of a meeting, presentation, workout, etc.

You can leave open the visual display and glance at it when needed. During the timing, you can adjust the times, pause and skip sections, or reset it all together. The timer even continues the count when you leave the app. When you return to it the performance assistant view will recover its previous state, including elapsed time.

Your individual performance setups can be saved, edited, and used again. It would be nice however if you could customize the color scheme. I would prefer a simple black and white.

LED Photo Timer Lite

The ad supported lite version of LED Photo Timer is seriously easy to use. Launch it, tap one of the time presets for activating the shutter of your iPhone camera, start the timer, and you’re good to go.

This is app is useful for when you want to include yourself in a group photo, or you when you need to steady your shot.

Seconds Free is another interval setting timer with a more stylish interface than Interval Timer described above. The free version of this app however does not allow you to save your settings. The pro version is $2.99.

Seconds Free also looks great on the iPad with a large display and color coding–great for glancing over at it from a distance when you’re doing a workout.

iStandard Clock for the iPad (.99 cents) is the only app I came across that mirrors the design of Apple’s default clock app featured in the iPhone. It includes a World Clock, Stopwatch, and of course a Timer.

Unlike with the iPhone, iStandard Clock supports landscape as well as portrait view.

If you’re looking to prop up your iPad and display the time and weather, you might want to download the free, ad supported version of Night Stand for the iPad. The developers held back a lot of features found in the pro version (.99 cents), but it will give you idea for the look and feel of this app before you decide to purchase the full version.

The time display app might useful for when you’re charging your app and you want a useful way to view the time at night or even in the morning as you’re getting ready for work.

The free version does not provide support for Twitter and Facebook timeline displays. But it does include weather and a non-customizable RSS news feed with built-in web browser.

If you need a fat, can’t-miss-it count down or count up display timer, Easy Timer might just do the trick. Easy Timer includes three presets and alarms, and can be displayed in landscape or portrait mode.

The changing bar of ads at the top of the display may be a little distracting, but maybe not from a distance.

It came to me that I should start exercising when I looked at my big belly. I have searched for personal training and group PT sessions but the prices were much more expensive than I have thought. I wanted to receive personal training sessions but the expenses were over my budget as I don’t have sustainable income.

I had no other choice but to exercise all alone. I didn’t know where the start and what to do. So I think I used each and every exercise applications on iPhone App Store and Google Play. However, there were no applications that matched my taste. The programs were poor or I wasn’t able to focus on the exercise. Often, I was not able to make an exercise program in accordance with my own desire.

I have been thinking continuously to find out a way to assist people with such needs so that he or she may continue exercising in a systematical manner without giving up easily. Through the process, I have designed an exercise application improving the discomforts I felt before.

The name of the application is “Interval Timer.” The application was designed to serve people who are willing to exercise alone and there are four strengths in this application.

1. The application tells the user the exercise of the day. More than 600 exercise programs are provided and more will be added in the future.
2. The personal trainer feature will advise the user when starting to exercise. The feature tells the user the reason for exercising, provides advices on the posture, and congratulates for enduring hard time.
3. All the features are provided free of charge. The user may also make, edit, and manage their own exercise program.
4. The application can be run on iPad and the contents are all localized in English, Mandarin Chinese, Japanese, Spanish, and Korean language. :D

I would like people to enjoy exercising without financial, temporal, and spatial restraints. So that is exactly why I have made this ‘Interval Timer Application’ so that all the places may act as a fitness center only with iPhone or iPad.

Please provide us with the feedback on the 'Interval Timer' application so that the application may become the world's best exercise application. We will improve the application by reflecting your precious opinion. Thank you very much. :D